386609 has 2 divisors, whose sum is σ = 386610. Its totient is φ = 386608.

The previous prime is 386587. The next prime is 386611. The reversal of 386609 is 906683.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384400 + 2209 = 620^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 386609 - 2¹⁶ = 321073 is a prime.

Together with 386611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (386629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193304 + 193305.

It is an arithmetic number, because the mean of its divisors is an integer number (193305).

2³⁸⁶⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

386609 is a deficient number, since it is larger than the sum of its proper divisors (1).

386609 is an equidigital number, since it uses as much as digits as its factorization.

386609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 386609 is about 621.7788996098. The cubic root of 386609 is about 72.8490657639.

The spelling of 386609 in words is "three hundred eighty-six thousand, six hundred nine".